CN105652444B - display device - Google Patents
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- CN105652444B CN105652444B CN201610030758.9A CN201610030758A CN105652444B CN 105652444 B CN105652444 B CN 105652444B CN 201610030758 A CN201610030758 A CN 201610030758A CN 105652444 B CN105652444 B CN 105652444B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B27/0103—Head-up displays characterised by optical features comprising holographic elements
- G02B2027/0105—Holograms with particular structures
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0129—Head-up displays characterised by optical features comprising devices for correcting parallax
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
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Abstract
This disclosure relates to display device.The display device includes display and spatial light modulator.The display includes multiple display pixels, and the luminous intensity of each display pixel can be adjusted so that shows the first image on the display.The light that the display issues is emitted by the spatial light modulator, to enter eyes, and scheduled transmissivity distribution or reflectivity distribution is formed in the spatial light modulator.Wherein, the first image is distributed with the transmissivity or reflectivity distribution is set, so that imaging of the emergent light being emitted from the spatial light modulator at the retina of the eyes has the scheduled curvature of field, so that the imaging point of the peripheral portion outside the optical axis of the eyes is located substantially on the retina of the eyes.The display device of the disclosure can delay the progress of eyes of user aberration.
Description
Technical field
This disclosure relates to more specifically display device relates to delay the display of the progress of eyes of user aberration to fill
It sets.
Background technique
Normally, eyes can have the various aberrations of defocus, astigmatism, the curvature of field, spherical aberration and/or coma etc..
Currently, since majority must carry out working and learning, visual fatigue symptom using display device for a long time
It is very universal.In addition, the head-mounted display apparatus occurred recently, which is also easy to cause, generates visual fatigue symptom.
On the other hand, the aberration of eyes is increasingly in progress.For example with defocus, mypia progression rate increasingly improves.
For myopia, usually by the way that imaging point is moved to view before retina using frame eyeglasses or contact lenses
Visual quality is improved on film.But due to user usually need frequent switching viewing different distance at object, often
Rule glasses do not adapt to the adjustment state of user generally.In addition, as shown in Figure 1, conventional eyeglass is usually only focused on regards in by eyes
The imaging point (for example, point A etc.) of central part (i.e. central fovea) on axis OO ' is moved on retina, and eyes optical axis OO ' is outside
Peripheral portion imaging point (for example, point B etc.) it is general all un-shifted on retina.Therefore, retina remove central part
Imaging on/outer peripheral portion is simultaneously unintelligible.This is an important factor for leading to mypia progression and visual fatigue symptom.
Therefore, eyes of user aberration (defocus, astigmatism, the curvature of field, spherical aberration and/or coma etc. can be delayed by needing one kind
Various aberrations) progress display device.
Summary of the invention
One purpose of the disclosure is to provide a kind of new display device.
Another object of the present disclosure is to provide a kind of display device, can delay eyes of user aberration (such as defocus,
The various aberrations of astigmatism, the curvature of field, spherical aberration and/or coma etc.) progress.
A further object of the present disclosure is to provide a kind of display device, can alleviate visual fatigue symptom.
Another purpose of the disclosure is to provide a kind of display device, and imaging can be improved according to eyes of user aberration
Quality.
According to an aspect of the present invention, a kind of display device is disclosed comprising: display, the display include
Multiple display pixels, the luminous intensity of each display pixel can be adjusted so that shows the first figure on the display
Picture；And spatial light modulator (space light modulator, SLM), the light that the display issues pass through the space
Optical modulator outgoing to enter eyes, and forms scheduled transmissivity distribution or reflectivity in the spatial light modulator
Distribution.Wherein, the first image is distributed with the transmissivity or reflectivity distribution is set, so that from the spatial light tune
Imaging of the emergent light of device outgoing processed at the retina of the eyes has the scheduled curvature of field (field curvature), from
And the imaging point of the peripheral portion outside the optical axis of the eyes is located substantially on the retina of the eyes.
Optionally, the first image is distributed with the transmissivity or reflectivity distribution is set, so that from the sky
Between imaging of the emergent light at the retina of the eyes that is emitted of optical modulator not only compensate for the eyes the optical axis on
Aberration, but also there is the scheduled curvature of field.
Optionally, the display device further comprises: having the first optical component of refraction or reflex, institute to light
The light for stating display sending enters the spatial light modulator after by first optical component.
Optionally, the display device further comprises: there is the second optical component of refraction or reflex to light, from
The emergent light of the spatial light modulator outgoing enters the eyes after by second optical component.
Optionally, the display device further comprises: eye tracks device, and the eye tracks device measures the eye
The three-dimensional space position and direction of visual lines of eyeball, and the first image is distributed with the transmissivity or reflectivity distribution is to be based on
The measurement result of the eye tracks device and set.
Optionally, the display device further comprises: spatial position calculating device, the spatial position calculating device meter
Calculate the spatial position that the display device to be presented to the object of the eyes, and the first image and the transmissivity
It is distributed or reflectivity distribution is the spatial position based on the object and is set.
Optionally, the display device further comprises: aberration input unit, and the aberration input unit is for inputting institute
The aberration of eyes is stated, and the first image and the transmissivity are distributed or reflectivity distribution is the aberration based on the eyes
And set.
Optionally, second optical component further comprises half-reflecting half mirror；The display device further comprises taking the photograph
As head；And enter the eyes after through the half-reflecting half mirror from the emergent light that the spatial light modulator is emitted,
And the reflected light from the eyes enters the camera after by half-reflecting half mirror reflection, to measure the eye
The aberration of eyeball.
Optionally, the eyes include multiple eyes；And the first image is distributed with the transmissivity or reflectivity
Distribution is set, so that any one eyes of the emergent light being emitted from the spatial light modulator in the multiple eyes
Imaging at retina has the scheduled curvature of field, so that the imaging point of the peripheral portion outside the optical axis of any one eye
It is located substantially on the retina of any one eye.
Optionally, the first image is distributed with the transmissivity or reflectivity distribution is set, so that from the sky
Between imaging of the emergent light at the retina of any one eye in the multiple eyes that is emitted of optical modulator not only compensate for
Aberration on the optical axis of any one eye, but also there is the scheduled curvature of field.
Optionally, the spatial light modulator is liquid crystal display, and the liquid crystal display includes multiple adjusting pixels, each tune
The transmissivity or reflectivity for saving pixel can be independently adjustable, to form the scheduled transmissivity distribution or reflectivity point
Cloth.
Optionally, the spatial light modulator is the film or hologram of microlens array, pinhole plate, scattering pattern.
Optionally, the display is computer monitor, video screen, mobile phone screen or head-mounted display.
Optionally, the aberration of the eyes includes defocus, astigmatism, the curvature of field, spherical aberration and/or coma.
The display device of the disclosure constitutes light field display device.Made a reservation for by being formed to have using light field display device
The curvature of field imaging, and improved using the scheduled curvature of field with aberration (such as defocus, astigmatism, the curvature of field, spherical aberration and/or coma
Deng various aberrations) imaging of the eyes of user on the peripheral portion of retina readability, the display device of the disclosure
It can delay the progress of eyes of user aberration.
In addition, the display device of the disclosure can also alleviate visual fatigue symptom.
In addition, the display device of the disclosure can also improve image quality according to eyes of user aberration.
Detailed description of the invention
Disclosure illustrative embodiments will be described in more detail in conjunction with the accompanying drawings.The disclosure above-mentioned and
Other objects, features and advantages will be apparent.In disclosure illustrative embodiments, identical appended drawing reference is usual
Indicate identical component.
Fig. 1 is schematic diagram the reason of explaining ocular aberrations progress；
Fig. 2 is the schematic diagram for explaining the reason of display device of the disclosure delays ocular aberrations to be in progress；
Fig. 3 is the structural block diagram according to the display device of one embodiment of the disclosure；
Fig. 4 is the index path according to the display device of one embodiment of the disclosure；
Fig. 5 is the schematic diagram for explaining the principle of light field display device；
Fig. 6 is the structural block diagram of display device according to another embodiment of the present disclosure；
Fig. 7 is the structural frames according to the display device that can measure eyes of user aberration of another embodiment of the disclosure
Figure；And
Fig. 8 is the optical path according to the display device that can measure eyes of user aberration of another embodiment of the disclosure
Figure.
Specific embodiment
The preferred embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Preferred embodiment, however, it is to be appreciated that can realize the disclosure without the embodiment party that should be illustrated here in various ways
Formula is limited.On the contrary, these embodiments are provided so that this disclosure will be more thorough and complete, and can be by the disclosure
Range is completely communicated to those skilled in the art.
As previously mentioned, eyes can have the various aberrations of defocus, astigmatism, the curvature of field, spherical aberration and/or coma etc..?
Hereinafter, for simplicity, it is only described by taking myopia as an example.However, it will be apparent to one skilled in the art that this public affairs
The principle opened can be adapted for any aberration.
As previously described with regard to fig. 1, since conventional myoporthosis means (for example, conventional eyeglass etc.) are usually only focused in general
The imaging point (for example, point A) of central part (i.e. central fovea) on eyes optical axis OO ' is moved on retina (i.e. retina
Imaging clearly on central part), and the imaging point (for example, point B) of the peripheral portion by eyes optical axis OO ' outside is not all moved to yet
On retina (i.e. the imaging is not clear on the peripheral portion of retina), therefore, although conventional myoporthosis means can improve
Image quality, the myopic degree and visual fatigue symptom of eyes of user are but increasingly in progress.Similarly, although conventional ocular aberrations
Correction means can improve image quality, and eyes of user aberration and visual fatigue symptom are but increasingly in progress.Correlation theory can be found in
Document " Peripheral Refraction and the Development of Refractive Error:a Review ",
W.Neil Charman and Hema Radhakrishnan,Ophthal.Physiol.Opt.,201030:321-338。
The present inventor is recognizing the above problem after further investigation, and proposes aobvious by building light field
Showing device delays the thought of the progress of eyes of user near-sighted (and various other aberrations).More specifically, in the disclosure,
By forming the imaging with the scheduled curvature of field using light field display device.Compare Fig. 1 and Fig. 2 as it can be seen that showing by light field
Device be formed by as AB ' compared to for example by conventional eyeglass be formed by as AB have the scheduled curvature of field so that eye
The imaging point of peripheral portion outside the eyeball optical axis is all located substantially on eyes of user retina, that is, so that the peripheral portion of retina
Substantially imaging clearly on point.In this way, the display device of the disclosure can effectively delay eyes of user myopia (and other
Various aberrations) progress.In addition, the display device of the disclosure just can also effectively alleviate visual fatigue symptom.
It is described in further detail below in conjunction with display device of the attached drawing to the disclosure.
Fig. 3 is according to the structural block diagram of the display device of one embodiment of the disclosure, and Fig. 4 is one according to the disclosure
The index path of the display device of a embodiment.
As shown in Figure 3 and Figure 4, the display device 1 of the disclosure includes display 10 and spatial light modulator 20.
In Fig. 4, by before display 10 installation space optical modulator 20 form light field display device.In general,
At a certain distance from spatial light modulator 20 is arranged on before display 10, between spatial light modulator 20 and display 10
There is certain thickness medium 15.By adjusting the thickness and refractive index of medium 15, adjustable spatial light modulator 20 and display
Light path between device 10.In the disclosure, medium 15 is not particularly limited, such as can be air, oil, water, high score
Sub- material or other any materials appropriate.
Display 10 generally includes multiple display pixels, and the luminous intensity of each display pixel can be adjusted so that aobvious
Show and shows the first image (for example, image CD, or being object CD) on device 10.
The display 10 of the disclosure can be computer monitor, video screen, mobile phone screen, head-mounted display or its
Its any display appropriate.More specifically, display 10 can be conventional plane or flexible displays, such as liquid crystal
Display, TV, laptop computer displays, tablet computer display, the virtual reality of large screen cell phone and wear-type are aobvious
Show device or augmented reality display.In addition, display 10 can also be conventional 3D display device, such as the 3D display of active shutter
Device, the 3D display device shown using polarization and the 3D display device shown using complementary colours.Display to the disclosure
The type of device 10 is not particularly limited, as long as it is able to carry out display.
Spatial light modulator 20 is alternatively referred to as light field filter.The light that display 10 issues goes out by spatial light modulator 20
It penetrates, to enter eyes 40.In addition, forming scheduled transmissivity distribution or reflectivity distribution in spatial light modulator 20.Display
The distribution of scheduled transmissivity or both reflectivity distributions on the first image and spatial light modulator 20 on device 10 shape together
At will incident eyes 40 field information.
In the disclosure, the type of spatial light modulator 20 is not particularly limited, as long as can be formed on pre-
Fixed transmissivity distribution or reflectivity distribution.
For example, spatial light modulator 20 can be microlens array or pinhole plate.
In another example spatial light modulator 20 can also be the film of specific scattering pattern, hologram, etc..
As an alternative, spatial light modulator 20 can also be liquid crystal display.Liquid crystal display may include multiple adjusting pixels,
Each transmissivity for adjusting pixel or reflectivity can be independently adjustable, so as to form scheduled transmissivity distribution or reflection
Rate distribution.Therefore, spatial light modulator 20 can use various transmission liquid crystal screens or reflection type lcd panel, as long as each thereon
Transmissivity or reflectivity at position can be conditioned.For example, spatial light modulator 20 can use LCoS (Liquid
Crystal on Silicon, the i.e. attached silicon of liquid crystal, are also liquid crystal on silicon, are a kind of based on reflective-mode, very small size of square
Battle array liquid crystal display device), DMD (Digital Micro mirror Device, Digital Micromirror Device, by the U.S. can also be used
The minimum reflecting mirror of one kind of Texas Instruments' exploitation).
It should be noted that transmission thereon can be changed in real time and easily when spatial light modulator 20 is liquid crystal display
Rate distribution or reflectivity distribution, and the numerical value of transmissivity or reflectivity thereon is not necessarily limited to 0 or 1, but can be 0 and 1
Between any value (including 0 and 1).In this case, both display 10 and spatial light modulator 20 can be used for
Show picture material.It therefore, can be more flexible when spatial light modulator 20 is liquid crystal display compared to above-mentioned other types
And be conveniently adjusted will incident eyes field information.
The transmissivity on the first image and spatial light modulator 20 in the display device 1 of the disclosure, on display 10
Distribution or reflectivity distribution are set (field information of i.e. incident eyes is set), so that being emitted from spatial light modulator 20
Imaging EF ' of the emergent light at the retina of eyes 40 there is the scheduled curvature of field.For example, as shown in figure 4, being wanted for user
The object CD of viewing is formed compared to the picture EF that will form by aforementioned conventional eyeglass by the display device 1 of the disclosure
Picture EF ' have the scheduled curvature of field so that the imaging point of the peripheral portion outside the optical axis is located substantially on eyes of user view
On film, that is, so that substantially imaging clearly on the peripheral portion of retina.In this way, the display device 1 of the disclosure can be effectively
Delay the progress of eyes of user aberration and/or alleviates visual fatigue symptom.
Incidentally, here, the meaning of term " substantially " should be to those skilled in the art it is aobvious and
It is clear to.For example, its imaging point for being not required for the peripheral portion outside the optical axis all accurately on eyes of user retina or
It is very clear to be all imaged at every bit on the peripheral portion of retina；But allow there are certain deviation range, and this
Field technical staff can be readily determined the deviation range with limitation according to the actual needs.For example, the deviation range can
To be ± 5D (diopter), ± 2D or ± 1D etc..This is similarly applicable for the meaning of hereinafter terms " substantially ".
In addition, incidentally, in order to more effectively delay the progress of eyes of user aberration and/or alleviate visual fatigue disease
Shape, for example, the scheduled curvature of field clicks through the imaging of the peripheral portion outside the optical axis when eyes 40 are myopia
One step is in medialis retinae；And when eyes 40 are farsightedness, the scheduled curvature of field preferably makes the periphery outside the optical axis
Partial imaging point is further located on the outside of retina.
It will be briefly explained the principle of the light field display device of the disclosure below.
In document " Eyeglasses-free Display:Towards Correcting Visual Aberrations
with Computational Light Field Displays”,Fu-Chung Huang,Gordon Wetzstein,
In Brian A.Barsky and Ramesh Raskar, ACM Transaction on Graphics, xx:0, Aug.2014,
Light field projection is described in detail.
Assuming that the horizontal position on retina is x, the horizontal position on the pupil of eyes is u, then light field l (x, u) is described
Irradiation profile in eyes.In addition, it is assumed that display device can emit comprising the spatial variations x on screen coverdOn pupil plane
Angle change udLight field, then can will enter eyes irradiation profile be modeled as light field ld(xd,ud).Furthermore it is possible to simulated eye
Refraction and aberration in eyeball, so that xd=Φ (x, u).
According to the Ray Matrix representation of standard, incident light and screen on the retina can be emitted
Mapping between light is modeled to the transmission range D between retina and pupile, focal length be f lens refraction and pupil
Transmission range D between screenoCombined effect, as shown in following formula (1).
Here,It indicates the aberration of eyes.It should be noted that since formula (1) only accounts for eye
The focal length f of eyeball, therefore it only simulates the defocus of eyes.However, other any aberrations of such as astigmatism and higher order aberratons also can
It is enough comprised in the formula.For example, the general formula of Δ can be expressed asHere W indicates eye
The various aberrations other than defocus of eyeball.
The foregoing describe the projections of retina light field.When light field being presented to the user so that it receives desired view
When film projects, the projection of backlight field is related to.
At this point, it is assumed that viewing distance, pupil size and other parameters etc. be it is certain, then can be asked by following formula (2)
Solve the light field to be emitted:
Here, I is target image, and P indicates the projection in the light field to retina that display device is emitted, and N is indicated
The quantity of the light of transmitting.It can be solved by various methods known in the art formula (2), for example, can be by using mark
Quasi- non-negative linearity solver etc. solves formula (2).
As seen from the above description, when one timing of the parameters such as viewing distance, ocular aberrations, if given wishing in user's eye
The image received at the retina of eyeball is (for example, have the image of the scheduled curvature of field, thus at least so that the peripheral portion of the image
Divide and be located substantially on retina, that is, so that substantially imaging clearly on the peripheral portion of retina), then it can be reversed solution
Need to be presented to the user the incident field of eyes out.
In the disclosure, as previously mentioned, being made up of light field display device display 10 and spatial light modulator 20, with
Incident field required for emitting.
As shown in figure 5, (here, Q is illustrated as the virtual image to the Example image point Q presented for light field display device
Point), intensity data is equal to the sum of the light intensity data of all emergent lights for forming picture point Q.It is transmitted illustrated by Fig. 5
In the case where the spatial light modulator 20 of liquid crystal display formula, the light intensity data of every beam emergent light, which are equal to, issues the aobvious of the emergent light
Show the luminous intensity x of the display pixel on device 10iWith the transmissivity y of the adjusting pixel for the spatial light modulator 20 for transmiting the emergent lighti
Product.Merely exemplary, in Fig. 5, the quantity of emergent light is 4.At this point, can indicate that picture point Q's is strong by following formula (3)
Degree is according to IQ:
IQ=Σixiyi=x1y1+x2y2+x3y3+x4y4 (3)
In the description above by reference to Fig. 5, picture point Q is virtual image point, is formed in display 10 and spatial light modulator 20
Left side.However, it will be apparent to one skilled in the art that in the disclosure, picture point Q either real image point,
It can be virtual image point.In addition, being not particularly limited to the position of picture point Q, such as display 10 and space can be located at
The left side (for Fig. 5) of optical modulator 20, be located at display 10 at, between display 10 and spatial light modulator 20,
At spatial light modulator 20 or positioned at the right side of display 10 and spatial light modulator 20 (for Fig. 5).
In addition, the quantity of emergent light is 4 in the description above by reference to Fig. 5.However, for those skilled in the art and
Speech is it is apparent that in the disclosure, be not particularly limited the quantity of emergent light.
In addition, spatial light modulator 20 is the space light modulation of transflective liquid crystal screen formula in the description above by reference to Fig. 5
Device.However, it will be apparent to one skilled in the art that in the disclosure, not to the type of spatial light modulator 20
There is special limitation.For example, spatial light modulator 20 can be the spatial light modulator of reflective liquid crystal screen formula.At this point, every beam goes out
The light intensity data for penetrating light are equal to the luminous intensity and the reflection outgoing of the display pixel on the display 10 for issuing the emergent light
The product of the reflectivity of the adjusting pixel of the spatial light modulator 20 of light.In addition, as previously mentioned, other than liquid crystal display, space
Optical modulator 20 can also be microlens array, pinhole plate, the film of specific scattering pattern, hologram, etc..In these feelings
Under condition, those skilled in the art are easy to apply after the modification for carrying out formula (3) adaptability, and details are not described herein again
?.
As seen from the above description, it can be obtained uncommon according to the disclosure by adjusting display 10 and spatial light modulator 20
Hope the incident field for being presented to the user eyes.After the incident field is presented to eyes of user, it can make in user's eye
The image received at the retina of eyeball has the scheduled curvature of field, so that the imaging point of the peripheral portion outside the optical axis is substantially
On retina, that is, so that substantially imaging clearly on the peripheral portion of retina.In this way, the display device energy of the disclosure
Enough delay the progress of eyes of user aberration and/or alleviates visual fatigue symptom.
It is noted that having the user of aberration for eyes, this can be used in the state of wearing conventional eyeglass
Disclosed display device, so that imaging of the emergent light being emitted from spatial light modulator 20 at the retina of eyes has in advance
Thus the fixed curvature of field delays ocular aberrations to also improve the imaging definition on the peripheral portion of retina as previously described
Progress and/or alleviation visual fatigue symptom.
In addition, there is the user of aberration for eyes, it can also be in the state of not wearing conventional eyeglass (i.e. naked eye)
Use the display device of the disclosure.This is because the physical quantity Δ in above formula (1) illustrates the aberration of eyes.In this feelings
Under condition, in the display device of the disclosure, the transmissivity on the first image and spatial light modulator 20 on display 10 is distributed
Or reflectivity distribution can be set, so that the emergent light being emitted from spatial light modulator 20 is at the retina of eyes 40
Imaging EF ' not only compensate on the optical axis of eyes 40 aberration (as previously mentioned, conventional eye correction means usually only focus in
The imaging point of central part on the optical axis is moved on retina), but also there is the scheduled curvature of field, so that outside the optical axis
The imaging point of peripheral portion be also located substantially on retina.In other words, to will the field informations of incident eyes carry out
Control, so that entire imaging, which is substantially all, to be located on retina, that is, so that on the central part and peripheral portion of retina
It is substantially all imaging clearly.In this way, there is the user of aberration for eyes, when using the display device according to the disclosure,
Clear image (improving image quality according to ocular aberrations) easily can not only be just watched with naked eye, but also can
Delay the progress of ocular aberrations simultaneously and/or alleviates visual fatigue symptom.
Although in addition, it should also be noted that illustrate only an eyes 40 in Fig. 4, eyes 40 may include more
A eyes.For example, the multiple eyes can be the left eye and right eye of the same user, the multiple eyes can also be different
Multiple eyes (i.e. multiple users watch display device together) of user, etc..
In this case, the first image on display 10 and the distribution of the transmissivity in spatial light modulator 20 or reflection
Rate distribution can be set, so that any one eye of the emergent light being emitted from spatial light modulator 20 in the multiple eyes
Imaging at the retina of eyeball has the scheduled curvature of field so that the peripheral portion outside the optical axis of any one eye at
Picture point is located substantially on the retina of any one eye, that is, so that the peripheral portion of the retina of any one eye
Substantially imaging clearly on point.
Further, the first image on display 10 and the distribution of the transmissivity in spatial light modulator 20 or reflectivity point
Cloth can also be set, so that any one eye of the emergent light being emitted from spatial light modulator 20 in the multiple eyes
Retina at imaging not only compensate for the aberration on the optical axis of any one eye, but also have foregoing pre-
The fixed curvature of field.
In other words, according to the principle of light field display device above-mentioned, the display device of the disclosure can be for not
Multiple eyes (i.e. the aberration of each eye can be different) with aberration are shown simultaneously, so that each eye
The imaging of eyeball all has the foregoing scheduled curvature of field (so as to delay progress and/or the alleviation view of the ocular aberrations tired
Labor symptom), alternatively, so that the imaging of each eye not only compensates for the aberration on its respective optical axis, but also have
The foregoing scheduled curvature of field (so that the image quality of the eyes can not only be improved, but also can delay the eyes picture
The progress and/or alleviation visual fatigue symptom of difference).This point illustrates the considerable ease of the display device of the disclosure.
Other than display 10 and spatial light modulator 20, the display device of the disclosure can also optionally include other
Component.It will be explained in greater details below.
Fig. 6 is the structural block diagram of display device according to another embodiment of the present disclosure.
As shown in fig. 6, display device 2 includes display 10 and spatial light modulator 20, to constitute light field display device.Separately
Outside, display device 2 can also for example optionally include the first optical component 18, the second optical component 30, eye tracks device 60,
Any combination of spatial position calculating device 70 and aberration input unit 80 etc..
It is alternatively possible to the first optical component 18 that there is refraction or reflex to light be arranged, so that display 10
The light of sending enters spatial light modulator 20 after by the first optical component 18.For example, the first optical component 18 can have
There are the convergence to light or disperse function, can be and assemble class component such as convex lens, concave mirror, can also be diverging class component such as
Concavees lens.In the case where being provided with the first optical component 18, it is not necessary to substantially parallel arrangement display as shown in Figure 4
10 and spatial light modulator 20, but display 10 and spatial light modulator 20 can be set for greater flexibility according to actual needs
Relative position.This brings bigger freedom degree to the design of the display device of the disclosure.
Further optionally, the second optical component 30 (referring to Fig. 4) that there is refraction or reflex to light can be set,
So that entering eyes 40 after by the second optical component 30 from the emergent light that spatial light modulator 20 is emitted.For example, the
Two optical components 30 can have convergence or disperse function to light, can be and assembles class component such as convex lens, concave mirror, also
It can be diverging class component such as concavees lens.In the case where being provided with the second optical component 30, can come according to actual needs more
The position of display 10 and spatial light modulator 20 relative to eyes 40 is flexibly set, and display device can also be enhanced
Application range etc..This also brings bigger freedom degree to the design of the display device of the disclosure.
Further optionally, eye tracks device 60 can be set.Eye tracks device 60 can be with fast track to user's eye
The position of eyeball.More specifically, eye tracks device 60 can measure the three-dimensional space position and direction of visual lines of eyes, so as to
Enough know the distance between eyes of user and display device, also could be aware that the target object etc. that eyes of user is watched attentively.At this
In open, the first image on display 10 and space light modulation can be set based on the measurement result of eye tracks device 60
Transmissivity distribution or reflectivity distribution (field informations of i.e. incident eyes) on device 20.Certainly, in head-mounted display apparatus
In the case of, since the distance between head-mounted display apparatus and eyes are general relatively close, lead to the three-dimensional space position and view of eyes
Line direction can be considered as substantially fixation, therefore eye tracks device 60 is not necessary.
Further optionally, spatial position calculating device 70 can be set.If front is referring to as described in Fig. 5, display device is wanted
The object (such as picture point Q) for being presented to eyes generally also has certain spatial position.For example, it can be located at display 10,
But it can also be located at any other position.In this case, the physical quantity D in formula (1)oIt is also contemplated that display device institute
Be presented to the objects of eyes at the different spatial caused by defocus, the i.e. object relative to flat face of the inspection window away from
From.Spatial position calculating device 70 can calculate the spatial position of the object of the display device eyes of being presented to.In the disclosure
In, can based on spatial position calculating device 70 the spatial position of calculated object set the first figure on display 10
Picture is distributed with the transmissivity in spatial light modulator 20 or reflectivity distribution (field informations of i.e. incident eyes).
Further optionally, aberration input unit 80 can be set.If front is referring to as described in formula (1), physical quantity Δ describes eye
The aberration of eyeball.Here, aberration input unit 80 can be used to input the aberration of eyes.In one embodiment, user can be with
The aberration data of itself is previously entered (such as by each of optometry myopia obtained and astigmatism etc. by aberration input unit 80
Kind data).In another embodiment, user can also be inputted by aberration after the full aberration that hospital measures oneself and be filled
Set 80 input low order aberrations and higher order aberratons.It in the disclosure, can be based on the eyes inputted by aberration input unit 80
Aberration set transmissivity distribution in the first image on display 10 and spatial light modulator 20 or reflectivity distribution (i.e.
The field information of incident eyes).
Above-mentioned display 10 and spatial light modulator 20 and optional first optical component 18 and the second optical component
30 are typically provided in the optical path of display device 2.In addition, above-mentioned optional eye tracks device 60, spatial position calculate
Device 70 and aberration input unit 80 etc. can be all arranged on inside display device 2, can also be all arranged on
Outside display device 2, the inside of display device 2 can be arranged on a part and another part is arranged on outside display device 2
Portion, as long as it can be realized respective function.Also, as shown in fig. 6, display 10, sky can be connected via route
Between optical modulator 20, the first optical component 18, the second optical component 30, eye tracks device 60, spatial position calculating device 70
With aberration input unit 80 etc., so as to control all parts by controller (not shown).
In the above description, such as the aberration data of eyes of user can be inputted by aberration input unit 80.This
User is needed just to know the aberration of oneself eye in advance, or the aberration for needing user that hospital is gone to measure oneself eye in advance.?
Under some cases, this will be not very convenient for a user.In order to cope with the situation, the disclosure additionally provides another energy
Enough measure the display device of eyes of user aberration.Fig. 7 and Fig. 8 is the display device that can measure eyes of user aberration respectively
Structural block diagram and index path.
As shown in Figure 7 and Figure 8, the display device 3 of the disclosure may include display 10 and spatial light modulator 20, with structure
At light field display device.In addition, display device 3 for example can also include the second optical component 30, second optical component 30
It such as may further include half-reflecting half mirror 35.Also, display device 3 for example can also include camera 50.Shown in Fig. 8
In index path, the emergent light being emitted from spatial light modulator 20 enters eyes 40 (referring to figure after through half-reflecting half mirror 35
In arrow)；Hereafter, the reflected light from eyes 40 enters camera 50 (referring to figure after being reflected by half-reflecting half mirror 35
In shade optical path), so that the display device 3 of the disclosure can measure the aberration of eyes 40.
More specifically, in the display device of the disclosure 3, for example, adjustable display 10 and spatial light modulator
20, so that the brightness of the reflected light from eyes 40 reaches highest and uniform consistent.At this point, according to foregoing light field
The principle of display device, due to being presented to the user the incident field of eyes and imaging on the retina of eyes of user it is known that
Therefore the physical quantity Δ in formula (1) can be solved, indicates the aberration of eyes.
As seen from the above description, the display device 3 of the disclosure can inherently measure eyes of user picture in real time and rapidly
Difference.User can measure ocular aberrations by display device 3, and the aberration that measurement obtains is inputted or is recorded in display device 3,
Then display device 3 is watched, in the state of wearing spectacles or in the state of not wearing spectacles to obtain the center of retina
Blur-free imaging on part and peripheral portion, to improve image quality, aberration is delayed to be in progress and/or alleviate visual fatigue symptom.
Which further improves the flexibility of the display device of the disclosure and conveniences.
Incidentally, can also be optionally included in the display device of the disclosure 3 third optical component 45 (referring to
Fig. 8).Third optical component 45 enables to the reflected light from eyes 40 further after reflecting by half-reflecting half mirror 35
It is conditioned, subsequently into camera 50.Third optical component 45 is such as can be convex lens.
In addition, incidentally, as the display device 2 of the disclosure, the display device 3 of the disclosure can also be into one
Step optionally includes the first optical component 18, eye tracks device 60, spatial position calculating device 70, aberration input unit 80,
Etc..Details are not described herein again.
So far, the display device according to the disclosure has been described in detail with reference to the accompanying drawings.
Block diagram in attached drawing show the device of multiple embodiments according to the disclosure architectural framework in the cards and
Function.It should be noted that those skilled in the art it is apparent that according to actual needs, certain boxes in block diagram can
Be suitably merged or block diagram in a certain box can suitably be broken down into multiple boxes, as long as it can be realized
Desired function.In addition, in appropriate circumstances, certain boxes in block diagram can represent module, a program segment
Or a part of code, a part of the module, section or code include one or more for realizing defined logic
The executable instruction of function；Alternatively, certain boxes in block diagram can be based on defined the dedicated of functions or operations is executed
The system of hardware is realized, or can be realized using a combination of dedicated hardware and computer instructions.
The presently disclosed embodiments is described above.Above description is exemplary, and is not exhaustive, and
And it is also not necessarily limited to disclosed each embodiment.Without departing from the scope and spirit of illustrated each embodiment, for
Many modifications and changes are obvious for those skilled in the art.The selection of term used herein, it is intended to best
The principle, practical application or the improvement to the technology in market of each embodiment are explained in ground, or make the other general of the art
Logical technical staff can understand each embodiment disclosed herein.
Claims (13)
1. a kind of display device of the progress for delaying eyes of user aberration, comprising:
Display, the display include multiple display pixels, and the luminous intensity of each display pixel can be adjusted so that
The first image is shown on the display；And
Spatial light modulator, the light that the display issues are emitted by the spatial light modulator, with into eyes, and
Scheduled transmissivity distribution or reflectivity distribution are formed in the spatial light modulator,
Wherein, the first image is distributed with the transmissivity or reflectivity distribution is set to, and is presented and is needed to eyes of user
The incident field presented to eyes of user, so that view of the emergent light being emitted from the spatial light modulator in the eyes
Imaging at film not only compensates for the aberration on the optical axis of the eyes, but also has the scheduled curvature of field, so that
The imaging point of peripheral portion outside the optical axis of the eyes is located substantially on the retina of the eyes, and the incident field is
What aberration and the scheduled curvature of field retrospectively calculate based on the eyes obtained.
2. display device according to claim 1, further comprises:
There is the first optical component of refraction or reflex to light, the light that the display issues is passing through first optics
Enter the spatial light modulator after component.
3. display device according to claim 1, further comprises:
There is the second optical component of refraction or reflex to light, the emergent light being emitted from the spatial light modulator is passing through
Enter the eyes after second optical component.
4. display device according to claim 3, wherein
Second optical component further comprises half-reflecting half mirror；
The display device further comprises camera；And
The emergent light being emitted from the spatial light modulator enters the eyes after through the half-reflecting half mirror, and comes
Enter the camera after by half-reflecting half mirror reflection from the reflected light of the eyes, to measure the picture of the eyes
Difference.
5. display device according to claim 1, further comprises:
Eye tracks device, the eye tracks device measure the three-dimensional space position and direction of visual lines of the eyes, and institute
State that the first image is distributed with the transmissivity or reflectivity distribution is the measurement result based on the eye tracks device and is set
's.
6. display device according to claim 1, further comprises:
Spatial position calculating device, the spatial position calculating device calculate the display device to be presented to the eyes
The spatial position of object, and the first image and the transmissivity are distributed or reflectivity distribution is the sky based on the object
Between position and set.
7. display device according to claim 1, further comprises:
Aberration input unit, the aberration input unit are used to input the aberration of the eyes, and the first image and institute
It states transmissivity distribution or reflectivity distribution is the aberration based on the eyes and is set.
8. display device according to claim 1, wherein
The eyes include multiple eyes；And
The first image is distributed with the transmissivity or reflectivity distribution is set, so that going out from the spatial light modulator
Imaging of the emergent light penetrated at the retina of any one eye in the multiple eyes has the scheduled curvature of field, so that
The imaging point of peripheral portion outside the optical axis of any one eye is located substantially on the retina of any one eye.
9. display device according to claim 8, the view of any one eye in the multiple eyes wherein, described
One image is distributed with the transmissivity or reflectivity distribution is set, so that the emergent light being emitted from the spatial light modulator
Imaging at film not only compensates for the aberration on the optical axis of any one eye, but also has the scheduled curvature of field.
10. display device according to claim 1, wherein the spatial light modulator is liquid crystal display, the liquid crystal display packet
Multiple adjusting pixels are included, each transmissivity for adjusting pixel or reflectivity can be independently adjustable, to be formed described pre-
Fixed transmissivity distribution or reflectivity distribution.
11. display device according to claim 1, wherein the spatial light modulator be microlens array, pinhole plate,
The film or hologram of scattering pattern.
12. display device according to claim 1, wherein the display is computer monitor, video screen, mobile phone
Screen or head-mounted display.
13. according to claim 1 or display device described in 9, wherein the aberration of the eyes include defocus, astigmatism, the curvature of field,
Spherical aberration and/or coma.
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| CN105954992B (en) | 2016-07-22 | 2018-10-30 | 京东方科技集团股份有限公司 | Display system and display methods |
| CN107783290B (en) * | 2016-08-30 | 2023-12-29 | 北京亮亮视野科技有限公司 | Head-mounted visual device capable of performing retina projection |
| CN106773064B (en) * | 2017-01-22 | 2020-08-04 | 网易（杭州）网络有限公司 | Display control method and device of image picture and head-mounted display equipment |
| CN106707515A (en) * | 2017-02-06 | 2017-05-24 | 陈超平 | Integrated eyesight correction and near-to-eye display device |
| WO2018160146A1 (en) * | 2017-02-28 | 2018-09-07 | Koc Universitesi | Near-to-eye display device using a spatial light modulator |
| CN107045205A (en) * | 2017-06-14 | 2017-08-15 | 杭州联络互动信息科技股份有限公司 | The eyeglass and VR glasses of VR glasses |
| CN108051917A (en) * | 2017-12-08 | 2018-05-18 | 深圳创维新世界科技有限公司 | Augmented reality display optical system and augmented reality display methods |
| CN109298531A (en) * | 2018-11-14 | 2019-02-01 | 深圳创维新世界科技有限公司 | Light regulation device, virtual reality wear display equipment and light regulation method |
| FR3106419A1 (en) * | 2020-01-21 | 2021-07-23 | Institut Mines Telecom | Contact lens for augmented reality and corresponding method |
| KR102631786B1 (en) * | 2020-06-24 | 2024-01-31 | 주식회사 레티널 | Lightweight optical device for augmented reality using state switchable optical element |
| CN112213859B (en) * | 2020-10-12 | 2022-09-23 | 歌尔科技有限公司 | Head-mounted display device and imaging method thereof |
| CN114594595B (en) * | 2020-12-03 | 2023-10-20 | 华为技术有限公司 | Glasses control method and device and glasses |
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